a cell is a smallest basic, structural and functional unit of life that is capable of self replication

Lucas

why does a fresh water fish excrete ammonia

Leonard

plz answer my question

Leonard

Ammonia is a toxic colorless gas and when its inside the fish biological system is converted to a less toxic compound then excreted in the form of urea. However too much ammonia will kill the fish " Ammonia Poisoning " which is a very common disease among fish.